New Colobus congoensis Monkey Species Discovered in Congo's Lomami Forest

Scientists have formally identified a previously unknown monkey species in the Democratic Republic of Congo, naming it *Colobus congoensis* and noting the local name “Likweli.” Genetic, morphological and vocal analyses confirmed the species, which is distinguished by black fur, a long tail, and orange‑cream markings around the mouth and nose. The discovery follows first low‑resolution sightings in 2008, renewed field work from 2018 to 2022, and 114 confirmed observations across roughly 1,700 km² between the Lomani and Lualaba rivers.

The primate is only the fifth new African monkey species recorded in the last 75 years. Researchers, including teams from the United States, Argentina, Brazil and European institutions, recommend classifying *C. congoensis* as Endangered on the IUCN Red List because its limited range, small population and threats from hunting and habitat loss make it highly vulnerable. “Our team evaluated multiple datasets that all reached the same conclusion: Likweli is a distinct species of Colobus monkey we haven't seen before,” said Yale post‑doctoral fellow Julia Arenson. The finding highlights the need for intensified protection of Lomami National Park and underscores the broader importance of conserving Congo’s forest biodiversity.